CN106448580A - 电平移位电路及具有该电平移位电路的显示面板 - Google Patents

电平移位电路及具有该电平移位电路的显示面板 Download PDF

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CN106448580A
CN106448580A CN201610356193.3A CN201610356193A CN106448580A CN 106448580 A CN106448580 A CN 106448580A CN 201610356193 A CN201610356193 A CN 201610356193A CN 106448580 A CN106448580 A CN 106448580A
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level shift
initial signal
clock signal
operation amplifier
circuit
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张先明
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US15/128,217 priority patent/US10186222B2/en
Priority to PCT/CN2016/088615 priority patent/WO2017201820A1/zh
Publication of CN106448580A publication Critical patent/CN106448580A/zh
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3674Details of drivers for scan electrodes
    • G09G3/3677Details of drivers for scan electrodes suitable for active matrices only
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3674Details of drivers for scan electrodes
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264Details of driving circuits
    • G09G2310/0286Details of a shift registers arranged for use in a driving circuit
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264Details of driving circuits
    • G09G2310/0289Details of voltage level shifters arranged for use in a driving circuit
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264Details of driving circuits
    • G09G2310/0291Details of output amplifiers or buffers arranged for use in a driving circuit
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/06Details of flat display driving waveforms
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/08Details of timing specific for flat panels, other than clock recovery

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

本发明提供一种用于阵列基板栅极驱动电路中的电平移位电路及显示面板,所述电平移位电路包括时序控制器及电平移位芯片,所述时序控制器包括初始信号引脚,所述电平移位芯片内包括存储模块及运算放大模块,所述存储模块储存有初始化赋值,所述时序控制器通过所述起始信号引脚与所述电平移位芯片连接,所述时序控制器用于通过起始信号引脚发送起始信号给所述运算放大模块,所述运算放大模块用于根据所述存储模块内的初始化赋值以所述起始信号为基准触发产生多组时序信号,并将所述多组时序信号发送给显示面板的显示电路。

Description

电平移位电路及具有该电平移位电路的显示面板
技术领域
本发明涉及显示屏领域,尤其涉及一种电平移位电路及具有该电平移位电路的显示面板。
背景技术
阵列基板栅极驱动(GOA)电路目前大量应用于LCD面板中,使用此电路可以节省LCD栅极驱动。其所需求栅极电路是在面板内做成,其需要的时序电压是由电平位移芯片(Level Shifter)产生,时序控制器(TCON)发送多个信号,例如起始信号(STV)、时钟信号(CLK)等,给所述电平位移芯片,每个信号需要时序控制器的一个引脚输出,这就要求时序控制器需要多个引脚,不同的时序控制器的引脚数量不同,当电平位移芯片需要多个信号输出,有些时序控制器无法匹配。
发明内容
为克服现有技术的不足,本发明提供一种简化的电平移位电路及具有该电平移位电路的显示面板。
本发明提供一种用于阵列基板栅极驱动电路中的电平移位电路,所述电平移位电路包括时序控制器及电平移位芯片,所述时序控制器包括初始信号引脚,所述电平移位芯片内包括存储模块及运算放大模块,所述存储模块储存有初始化赋值,所述时序控制器通过所述起始信号引脚与所述电平移位芯片连接,所述时序控制器用于通过起始信号引脚发送起始信号给所述运算放大模块,所述运算放大模块用于根据所述存储模块内的初始化赋值以所述起始信号为基准触发产生多组时序信号,并将所述多组时序信号发送给显示面板的显示电路。
进一步地,所述运算放大模块用于根据所述存储模块内的初始化赋值以所述起始信号的上升沿为基准,触发产生所述多组时序信号。
所述初始话赋值包括每一组时序信号的产生时间与所述起始信号的上升沿之间的间隔时间。
进一步地,所述存储模块内的初始化赋值还包括所述多组时序信号的高电平持续时间及周期时间。
进一步地,所述电平移位芯片包括多个输出引脚,所述运算放大模块用于将每组时序信号通过一个输出引脚输出至所述显示电路。
本发明还提供一种显示面板,所述显示面板包括电平移位电路及显示电路,所述电平移位电路包括时序控制器及电平移位芯片,所述时序控制器包括初始信号引脚,所述电平移位芯片内包括存储模块及运算放大模块,所述存储模块储存有初始化赋值,所述时序控制器通过所述起始信号引脚与所述电平移位芯片通信连接,所述时序控制器用于通过起始信号引脚发送起始信号给所述运算放大模块,所述运算放大模块用于根据所述存储模块内的初始化赋值以所述起始信号为基准触发产生多组时序信号,并将所述多组时序信号发送给所述显示电路。
进一步地,所述运算放大模块用于根据所述存储模块内的初始化赋值以所述起始信号的上升沿为基准,触发产生所述多组时序信号。
进一步地,所述初始话赋值包括每一组时序信号的产生时间与所述起始信号的上升沿之间的间隔时间。
进一步地,所述存储模块内的初始化赋值还包括所述多组时序信号的高电平持续时间及周期时间。
进一步地,所述电平移位芯片包括多个输出引脚,所述运算放大模块用于将每组时序信号通过一个输出引脚输出至所述显示电路。
本发明的有益效果:所述电平移位电路包括时序控制器及电平移位芯片,所述时序控制器通过起始信号引脚发送起始信号给所述电平移位芯片,所述电平移位芯片根据初始化赋值以所述起始信号为基准触发产生多组时序信号,并将所述多组时序信号发送给显示面板的显示电路,从而减少时序控制器与电平移位芯片之间的引脚数,简化了电平移位电路。
附图说明
图1为本发明显示面板较佳实施方式的***框图。
图2为本发明显示面板较佳实施方式的电平位移电路的时序图。
具体实施方式
下面,将结合附图对本发明各实施例作详细介绍。
请参阅图1及图2,本发明显示面板较佳实施方式包括电平移位电路100及显示电路300。所述电平移位电路包括一时序控制器10及一电平移位芯片20。在本实施例中,所述时序控制器10及一电平移位芯片20设于电路驱动板上。
所述电平移位芯片20内包括一存储模块201及一运算放大模块202。
所述时序控制器10通过起始信号引脚与电平移位芯片20通信连接。所述时序控制器10用于通过起始信号引脚发送起始信号(STV)给所述运算放大模块202,所述存储模块201储存有初始化赋值,所述初始话赋值包括每一组时序信号的产生时间与所述起始信号的上升沿之间的间隔时间T1~Tn、时序信号的高电平持续时间Tn+1及时序信号的周期时间Tn+2。所述运算放大模块202用于根据所述存储模块201内的初始化赋值以所述起始信号为基准触发产生多组时序信号,并将所述多组时序信号发送给显示面板的显示电路300。
以所述电平移位芯片20输出四组时序信号CKV1~CKV4为例,所述电平移位芯片20的正确识别到起始信号的上升沿,以起始信号的上升沿为基准,触发输出四组时序信号CKV1~CKV4。所述初始话赋值包括第一组时序信号CKV1的产生时间与起始信号的上升沿之间的间隔时间T1、第二组时序信号CKV2的产生时间与起始信号的上升沿之间的间隔时间T2、第三组时序信号CKV3的产生时间与起始信号的上升沿之间的间隔时间T3、第四组时序信号CKV4的产生时间与起始信号的上升沿之间的间隔时间T4。另外,所述初始值还包括该四组时序信号CKV1~CKV4的高电平持续时间T5、与周期时间T6,针对不同解析度的液晶面板,所述高电平持续时间T5和周期时间T6可以设定不同值。本实施例仅以四组时序信号为例进行说明,但本发明并不局限于此,还可以适用于更多组时序信号的情况。
另外,所述初始信号处于不同状态下,例如一般状态下、削角状况及预充电状况下,所述电平移位芯片20均能根据初始信号的不同状态来触发对应的时序信号,从而大大提升了所述电平移位芯片20的兼容性。
相比于现有的用于GOA架构液晶面板的电平移位电路,本发明的用于GOA架构液晶面板的电平移位电路能够减少时序控制器10与电平移位芯片20之间的引脚数,减少时序控制器10与电平移位芯片20之间的走线总数,减小电路驱动板的尺寸,降低生产成本。
虽然已经参照特定实施例示出并描述了本发明,但是本领域的技术人员将理解:在不脱离由权利要求及其等同物限定的本发明的精神和范围的情况下,可在此进行形式和细节上的各种变化。

Claims (10)

1.一种用于阵列基板栅极驱动电路中的电平移位电路,其特征在于,所述电平移位电路包括时序控制器及电平移位芯片,所述时序控制器包括初始信号引脚,所述电平移位芯片内包括存储模块及运算放大模块,所述存储模块储存有初始化赋值,所述时序控制器通过所述起始信号引脚与所述电平移位芯片连接,所述时序控制器用于通过起始信号引脚发送起始信号给所述运算放大模块,所述运算放大模块用于根据所述存储模块内的初始化赋值以所述起始信号为基准触发产生多组时序信号,并将所述多组时序信号发送给显示面板的显示电路。
2.根据权利要求1所述的电平移位电路,其特征在于,所述运算放大模块用于根据所述存储模块内的初始化赋值以所述起始信号的上升沿为基准,触发产生所述多组时序信号。
3.根据权利要求1所述的电平移位电路,其特征在于,所述初始话赋值包括每一组时序信号的产生时间与所述起始信号的上升沿之间的间隔时间。
4.根据权利要求1所述的电平移位电路,其特征在于,所述存储模块内的初始化赋值还包括所述多组时序信号的高电平持续时间及周期时间。
5.根据权利要求1所述的电平移位电路,其特征在于,所述电平移位芯片包括多个输出引脚,所述运算放大模块用于将每组时序信号通过一个输出引脚输出至所述显示电路。
6.一种显示面板,其特征在于,所述显示面板包括电平移位电路及显示电路,所述电平移位电路包括时序控制器及电平移位芯片,所述时序控制器包括初始信号引脚,所述电平移位芯片内包括存储模块及运算放大模块,所述存储模块储存有初始化赋值,所述时序控制器通过所述起始信号引脚与所述电平移位芯片通信连接,所述时序控制器用于通过起始信号引脚发送起始信号给所述运算放大模块,所述运算放大模块用于根据所述存储模块内的初始化赋值以所述起始信号为基准触发产生多组时序信号,并将所述多组时序信号发送给所述显示电路。
7.根据权利要求6所述的显示面板,其特征在于,所述运算放大模块用于根据所述存储模块内的初始化赋值以所述起始信号的上升沿为基准,触发产生所述多组时序信号。
8.根据权利要求6所述的显示面板,其特征在于,所述初始话赋值包括每一组时序信号的产生时间与所述起始信号的上升沿之间的间隔时间。
9.根据权利要求6所述的显示面板,其特征在于,所述存储模块内的初始化赋值还包括所述多组时序信号的高电平持续时间及周期时间。
10.根据权利要求6所述的显示面板,其特征在于,所述电平移位芯片包括多个输出引脚,所述运算放大模块用于将每组时序信号通过一个输出引脚输出至所述显示电路。
CN201610356193.3A 2016-05-25 2016-05-25 电平移位电路及具有该电平移位电路的显示面板 Pending CN106448580A (zh)

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US15/128,217 US10186222B2 (en) 2016-05-25 2016-07-05 Level shift circuit and display panel having the same
PCT/CN2016/088615 WO2017201820A1 (zh) 2016-05-25 2016-07-05 电平移位电路及具有该电平移位电路的显示面板

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107633828A (zh) * 2017-09-22 2018-01-26 深圳市华星光电技术有限公司 电平移位电路
CN108154859A (zh) * 2018-01-16 2018-06-12 深圳市华星光电技术有限公司 一种阵列基板及显示装置
WO2019015073A1 (zh) * 2017-07-21 2019-01-24 惠科股份有限公司 显示面板的驱动方法及驱动装置
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